Hinged harrow draw-bar.



P. A. STUBRMAN. HINGRD HARROW DRAW BAR. APPLIOATION TILED MAY13 1910Patented 0012. 18, 1910.

2 SHEETS-SHEET 1.

'PKZZT/Z J6 m r/mm P. A. STUERMAN. HINGBD HARROW DRAW BAR. APPLIOATIONIFILED MAY 13,1910.

Patented Oct. 18, 1910.

2 SHEETS-SHEET 2.

THE NORRIS PETERS c0. WASHINGTON, n. c.

PETER A. STUERMAN, 01E ROCK RAPIDS, IOWA.

HINGED HARROW DRAW-BAR.

Specification of Letters Patent.

Patented oer. 18, 1910.

Application filed May 13, 1910. Serial No. 561,092.

To all whom it may concern:

Be it known that I, PETER A. STUERMAN, a citizen ofthe United States,residing at Rock Rapids, in the county of Lyon and State of Iowa, haveinvented new and useful Improvements in Hinged Harrow Draw- Bars, ofwhich the following is a specification.

This invention relates to that class of drag harrows which are made upof a plurality of sections; and the present object of the invention isto provlde a flexible draw bar made up of a number of sections equal tothe number of harrow sections employed for the purpose of enabling thedevice to be conveniently folded to pass through gates and otherobstructions which would not admit of the passage of an inflexible drawbar.

Further objects of the invention are to simplify and improve theconstruction and operation of the harrow draw bar of the characteroutlined above.

With these and other ends 1n view, which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

In the accompanying drawings has been illustrated a simple and preIerredembodiment of the invention; it being however understood that nolimitation is necessarily made to the precise structural details thereinexhibited, but that changes, alterations and modifications within thescope of the invention may be resorted to if desired.

In the drawings, Figure 1 is a top plan view of a harrow constructed inaccordance with the invention and embodying three sections. Fig. 2 is atop plan view slightly reduced showing a harrow comprising foursections. Fig. 3 is a top plan view showing one of the intermediatesections of the draw bar detached. Fig. 41 is a perspective viewillustrating two hinge members of the improved device separated. Fig. 5is a bottom plan view of the two hinge members.

Corresponding parts in the several figures are denoted by likecharacters of reference.

The improved harrow draw bar is made up of a plurality of independentsections, namely two end sections A-A and one or more intermediatesections each designated by B. Each of the end members consists of atriangular frame comprising a body bar 1,

a diagonal bar 2 and a connecting bar 3. Secured upon the outer end ofeach body bar 1 is a clamp or reinforce member 4, said clamp beingsecured upon the body bar by means including an eye bolt 5. Secured uponthe inner end of the body bar 1 is a hinge member 6. The outer end ofthe diagonal member 2 extends through a flange 7 which projectsdiagonally from the clam member a, and to the inner end of the diagonalmember 2 is secured a hinge member 8. The connecting bar 3 joins thebody bar 1 adjacent the inner end of the latter and is disposedapproximately at right angles thereto, said connecting bar beingconnected with the hinge members 6 and 8 by means of nuts 9. An eye bolt10 extends through the body bar 1 near the inner end of the latter.

The hinge member 8 of each end section may consist of a solid castingwhich is apertured for the passage of the connecting bar 3; the hingemember 6 is preferably rabbeted upon the body bar 1 with which it isconnected by fastening bolts or pins 11, the opposed faces of the hingemember and the body bar being grooved to form an aperture for thepassage of the connecting bar. In this manner the end sections areconstructed in a solid and durable manner. Each of the intermediatesections B is composed of front and rear bars 12 and 13 which areconnected together and spaced apart by means of diagonal bars 1 1.I-Iinge members 15 are rabbeted and firmly secured upon the ends of thebars 12 and 13 and said bars are connected adjacent to their ends bymeans of connecting bars 16 extending through apertures 17 which areformed by grooves in the opposed faces of the connecting bars and thehinge members, the grooves in the latter being clearly indicated in Fig.5 of the drawings. The front bar 12 of each of the sections B ispreferably equipped with a clip 18 for the attachment of links or rings19 with which the draft evener may be connected in the usual manner.These clips 18 are actually utilized, however, only when a four sectiondraw bar is used, as shown in Fig. 2. The rear cross bars 13 of eachsection B are equipped with eye bolts 20.

The hinge members 6, S and 15, which have been herein described as beingconnected with the end sections and with the intermediate sections ofthe draw bar, may be of any suitable construction with the reservationthat the hinge members connected with the right hand section A must becapable of inter-engagement with the hinge members of the left hand endsection A and also with the hinge members 15 at the right side of eachintermediate section B, while the hinge members 15 of the left side ofeach section B must be capable of inter-engagement with the hingemembers 15 at the right side of any intermediate section B and also withthe hinge members of the left hand end section A. To this end the hingemembers connected with the right hand end section and with the left endof each intermediate section have each been shown as provided with twoarms 25, while the hinge members connected with the left hand endsection and with the right end of each intermediate section have beenshown each provided with a single arm 26 adapted to extend between thetwo arms of the hinge members previously mentioned. The arms of theseveral hinge members are apert-ured as shown at 27 for the passage ofhinge rods or pintles 28, which latter are provided at their front endwith eyes 29, the rear ends of said rods being threaded for thereception of nuts 30 to enable the several sections to be convenientlyassembled or separated according to the number of harrow sections inconnection with which the draw bar is to be used.

It will be obvious from the foregoing de scription, taken in connectionwith the accompanying drawings, that when it is desired to use a harrowconsisting of only two drag sections, the end members AA may be hingedlyconnected by means of a single hinge rod 28, as the drag sections, someof which have been shown in Fig. l where they are designated by C, maythen be connected with the eye bolts 5 and 10 of the body bar 1 of suchend sections. Then a three section harrow is to be used a singleintermediate section B is interposed between the end sections Arand thenthe middle drag section is attached to the eye bolts 20 of suchintermediate section. IVhen the three sec tion harrow is used the draftlinks 19 are preferably connected with the eyes 29 at the front ends ofthe hinge bars or pintles 28. For a four section harrow, an additionalintermediate section B is inserted, and the draft will then be connectedwith the clips 18, the latter being found necessary only when the foursection harrow is used; harrows of five or more sections arranged sideby side being rarely, if ever, employed.

It will be seen that by this invention I provide a draw bar or drawframe of simple and efficient construction composed of a plurality ofunits according to the number of drag units that it is desired to use inthe harrow. The draw frame units, being flexibly connected together bythe hinge members herein described, are capable of being folded upon oneanother as well as the drag units of the harrow, thus enabling thedevice to be carried through gate openings of relatively narrow width.The device may be conveniently'assembled or dismembered; it isinexpensive of construction and is capable of being stored in smallcompass when not in use.

Having thus described the invention, what I claim as new is 2-- 1. Adevice of the character described comprising two end sections eachconsisting of an approximately triangular frame including a body bar, adiagonal barand a connecting bar, the latter being disposedapproximately at right angles to the body bar,

hinge members connected with the body bar and with the diagonal baradjacent to the connecting bar, the latter being extended across andconnected with the hinge members, and a clamp secured upon the body barand having an extending flange apertured for the passage of the diagonalbar which is connected with said bar.

2. In a device of the character described, the combinationwith two endsections each equipped with hinge members adjacent to the inner endthereof, of an intermediate section comprising front and rear barsdisposed in parallel relation, diagonal brace bars connecting the same,hinge members se= cured upon the ends of the front and rear bars, saidhinge members and front and rear members having opposite grooves formingapertures, and cross bars extending through said apertures andhavingnuts abutting upon the front and rear sides of the front and rearbars and of the hinge members connected therewith.

8. In a device of the character described, two end sections eachconsisting of right angle triangle frames having hinge members adjacentto their inner ends, an interme diate section consisting of arectangular frame having hinge members adjacent both ends, said endsections and intermediate sec tions being each equipped with eye boltsfor the attachment of harrow sections, and hinge bolts serving toconnect the hinge members of proximate sections, said hinge bolts beingprovided with eyes at their front ends.

In testimony whereof I affix my signature in presence of two witnesses.

PETER A. STUEBMAN.

Vitnesses T. C. SCHMIDT, 7M. STUERMAN.

